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JPS54135547A - Lighting device - Google Patents

Lighting device

Info

Publication number
JPS54135547A
JPS54135547A JP4267478A JP4267478A JPS54135547A JP S54135547 A JPS54135547 A JP S54135547A JP 4267478 A JP4267478 A JP 4267478A JP 4267478 A JP4267478 A JP 4267478A JP S54135547 A JPS54135547 A JP S54135547A
Authority
JP
Japan
Prior art keywords
semi
light sources
light
contour
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4267478A
Other languages
Japanese (ja)
Inventor
Tomohiro Kuji
Nobuyuki Akiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4267478A priority Critical patent/JPS54135547A/en
Publication of JPS54135547A publication Critical patent/JPS54135547A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

PURPOSE: To enable the contour of an object which has undulations three-dimensionally and has gloss be made distinct by covering the object to be detected with a ground glass form semi-transparent semi-spherical form object and lighting the object through this with a plurality of external light sources.
CONSTITUTION: An object 7 is covered with a semi-spherical object 13 which is opened with a hole 12 at its vertex so as not to hinder the passage of the light incident to an objective lens 1 and the object is lighted with light sources 14 which are disposed in plurality on the outside. The light from the lighting light sources 14 is scattered as it passes through the semi-transparent object 13 and this scattered light evenly lights the object 7 on ground 15 from the stereo angles of 180° and therefore this is observed through the objective lens 1, whereby the contour of the object 7 may be distinctly viewed.
COPYRIGHT: (C)1979,JPO&Japio
JP4267478A 1978-04-13 1978-04-13 Lighting device Pending JPS54135547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4267478A JPS54135547A (en) 1978-04-13 1978-04-13 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4267478A JPS54135547A (en) 1978-04-13 1978-04-13 Lighting device

Publications (1)

Publication Number Publication Date
JPS54135547A true JPS54135547A (en) 1979-10-20

Family

ID=12642569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4267478A Pending JPS54135547A (en) 1978-04-13 1978-04-13 Lighting device

Country Status (1)

Country Link
JP (1) JPS54135547A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028295A (en) * 1983-07-01 1985-02-13 アイテツク・コ−ポレ−シヨン Device for observing printed circuit board with reflecting nonflat ground shape
JPH02167450A (en) * 1988-07-19 1990-06-27 Texas Instr Inc <Ti> Hemispherical non-glare lighting apparatus
JPH02272412A (en) * 1989-03-02 1990-11-07 Carl Zeiss:Fa Reflected light specimen illuminator
DE3924932A1 (en) * 1989-07-27 1991-01-31 Sattler Hans Eberhard Observation device for small objects e.g. rare stones - has concave mirror in holder vertically beneath transparent support for observed object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028295A (en) * 1983-07-01 1985-02-13 アイテツク・コ−ポレ−シヨン Device for observing printed circuit board with reflecting nonflat ground shape
JPH02167450A (en) * 1988-07-19 1990-06-27 Texas Instr Inc <Ti> Hemispherical non-glare lighting apparatus
JPH02272412A (en) * 1989-03-02 1990-11-07 Carl Zeiss:Fa Reflected light specimen illuminator
DE3924932A1 (en) * 1989-07-27 1991-01-31 Sattler Hans Eberhard Observation device for small objects e.g. rare stones - has concave mirror in holder vertically beneath transparent support for observed object

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